Chemistry - August 2007

im not 100% sure but im very interested in majoring in either biochem or chemistry. what type of jobs and internships can you get from either of the two? is it hard, as in studies and competition?

2007-08-22 07:30:08 · 5 answers · asked by J c0uture 4

2007-08-22 06:52:15 · 6 answers · asked by Anonymous

XVII

XIV

II

XVIII

I

2007-08-22 06:33:25 · 3 answers · asked by Ken h 1

Rutherfords experiment included bombarding thin gold foil with particles based on this research he conclided that_____

Atoms have a equal numbers of positive and negative charges

electrons orbit the nucleus in fixed patterns

atoms combine in fixed ratios with other atoms

clouds of electrons swarm around the nucli of atoms

most of the atom is empty space

2007-08-22 06:31:53 · 5 answers · asked by Ken h 1

the chemicals supplied is zinc oxide powder, dilute nitric acid and sodium carbonate solution.... please describe it in an experiment method...

2007-08-22 06:31:52 · 1 answers · asked by confused guy 1

2007-08-22 06:18:02 · 6 answers · asked by Ken h 1

A atoms combine in fixed ratios with other atoms

most of the atom is empty space

atoms have equal numbers of positive and negative charges

electrons orbit the nucleus in fixed patterns

none of the above

2007-08-22 06:16:20 · 2 answers · asked by Ken h 1

in connection with synthesis of liquid crystalline cholesteryl benzoate

2007-08-22 06:05:55 · 2 answers · asked by Ira d 2

2007-08-22 04:06:50 · 3 answers · asked by Anonymous

A. 114 g
B. 1.89 * 10^-22 g
C. 1.10 * 10^-22 g
D. 4.32 * 10^-23 g

2007-08-22 03:47:15 · 6 answers · asked by Vinny L 1

A. Ca2P3
B. CaP
C. Ca5P10
D. Ca2P
E. Ca3P2

2007-08-22 03:44:54 · 4 answers · asked by Vinny L 1

I only have a few questions.

1. A solution in which the pH remains relatively constant is a what?


2. Complete and balance the following neutralization reaction.
HF+KOH--->

3. Complete and balance the following neutralization reaction.
H3PO4+Ca(OH)2--->

4.HBr+Mg(OH)2--->


Those are the only ones I need help with. Any help will be appreciated.

2007-08-22 03:41:52 · 2 answers · asked by Anonymous

like when you drop it off with a dropper what's the approximate volume of that drop?

2007-08-22 03:40:25 · 3 answers · asked by Anonymous

Chalcogens (with the "ch" pronounced with a hard "c" as in "chemistry") are the name for the periodic table group 16 (old-style: VIB or VIA) in the periodic table.

2007-08-22 02:22:48 · 2 answers · asked by login_beta23 1

Is there any easy way to do this or is it just a ridiculously large equation I need to use?

The question is...Calculate the ionic strength for an aqueous solution with 0.002 mol/kg NaCO3

and next question says to estimate the mean ionic activity coefficient of the aqueous solution at 25 degrees C.

I really dont want to do this but I must!
If you answer, please explain, this is just a sample question to prepare me for a test so straight up answers are of no use to me! Ta:)

2007-08-22 02:00:20 · 3 answers · asked by Saved777 1

I googled it but could not find relevant results.

I really need help in the detailed procedure. A link that contains the preparation of copper(II) nitrate will do as well.

thanks.

2007-08-22 01:47:05 · 5 answers · asked by N.y.Rych 1

would it be trigonal planer? can someone explain it please?

im rubbish at chemistry!

2007-08-22 01:45:16 · 7 answers · asked by Anonymous

Why must the litmus paper must be moistened with water before using it to test for ammonia?

2007-08-22 01:43:52 · 3 answers · asked by icydollie xD 1

pbs+o2--> Pbo+so2

Please help me balance these equations

2007-08-22 01:36:17 · 5 answers · asked by Anonymous

2007-08-22 01:14:42 · 5 answers · asked by Michiko B 2

about premarital sex::

do you want it to be legal or not?
why??

2007-08-22 00:45:32 · 1 answers · asked by xela r 1

why must the flask and glass tubing be dry at start?

2007-08-22 00:10:19 · 3 answers · asked by xela r 1

2007-08-21 23:37:16 · 6 answers · asked by Anonymous

C3H8(g) + 5O2(g) ----> 3CO2(g) + 4H2O(g)
TABLE
Compound standard enthalpy of formation (KJ/mole)
C3H8(g) -103.85
O2(g) 0
CO2(g) -393.51
H2O(g) -241.82

2007-08-21 23:22:40 · 2 answers · asked by lamide e 1

2007-08-21 22:12:16 · 3 answers · asked by teokz2002 1

Hi.

I have 2 acylic latex emulsion with different Tg (glass transition temperature) which is 11oC and 30 oC. Is anyone knows which one will dry faster after applied on paper?

Thanks.

2007-08-21 20:46:46 · 1 answers · asked by stevenfoong 1

what is the mechanism of the reaction?

2007-08-21 20:16:15 · 2 answers · asked by Anonymous

A. Hydrogen Phosphide
B. Trihydrogen Phosphide
C. Hydrogen Phosphate
D. Phosphorus Trihydride
E. Hydrogen Triphosphate

2007-08-21 17:02:29 · 6 answers · asked by Vinny L 1

for example..

300 KPA to mL

or vis-versa

2007-08-21 16:32:53 · 6 answers · asked by Anonymous

There are 2 binary comp of Hg and O. Heating either of them results in the decompostion of the cmpd, with O gas escaping into the atmosphere while leaving a residue of pure Hg. Heating .6498 g of one of the cmpd leaves a residue of .6018 g. Heating .4172 g of the other cmpd results in a mass loss of .016. Determine the empirical formula of each cmpd.
Please show the work.

2007-08-21 16:23:54 · 3 answers · asked by Krazym0nkey 2